<h2>Site</h2>
<form id="form_step_1" action="?step=<?php echo $show + 1;?>" method="post">
  <div>
    <div class="td1">
      <label for="site_name">Site Name:</label>
    </div>
    <div class="td2">
      <input type="text" name="site_name" value="<?php echo isset($_SESSION['form_data']['site_name']) ? $_SESSION['form_data']['site_name'] : '' ;?>" onblur="test_step_1()" onfocus="test_step_1()"/>
    </div>
  </div>
  <div>
    <div class="td1">
      <label name="" for="site_url">Site Url :</label>
    </div>
    <div class="td2">
      <input type="text" name="site_url" value="<?php echo isset($_SESSION['form_data']['site_url']) ? $_SESSION['form_data']['site_url'] : $_SERVER['HTTP_HOST'].str_replace('install/','',$_SERVER['REQUEST_URI'] ) ;?>"  onblur="test_step_1()" onfocus="test_step_1()"/>
    </div>
  </div>
  <div>
    <div class="td1">
      <label for="site_tags">Tags :</label>
    </div>
    <div class="td2">
      <input type="text" name="site_tags" />
    </div>
  <div>
    <span>Enter lowercase tags comma separated.</span>
  </div>
  </div>
  <button id="submit" type="submit" disabled="disabled">Next</button>
</form>